cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A240890 Number of nX5 0..2 arrays with no element equal to a different number of vertical neighbors than horizontal neighbors, with new values 0..2 introduced in row major order.

Table of values

n a(n)
1 8
2 116
3 1485
4 19065
5 245268
6 3146755
7 40424861
8 519218802
9 6669141957
10 85661208693
11 1100266812500
12 14132294288479
13 181521187277681
14 2331535718787322
15 29947240904675409
16 384655164983132569

List of values

[8, 116, 1485, 19065, 245268, 3146755, 40424861, 519218802, 6669141957, 85661208693, 1100266812500, 14132294288479, 181521187277681, 2331535718787322, 29947240904675409, 384655164983132569]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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